Question

how to identify the insulator​

Answer 1

Answer:

If it doesn't conduct electricity then, it is an insulater

Answer 2

Answer:

The property that distinguishes an insulator is its resistivity; insulators have higher resistivity than semiconductors or conductors. The most common examples are non-metals. A perfect insulator does not exist because even insulators contain small numbers of mobile charges (charge carriers) which can carry current.

1. It does not conduct electricity

2. Poor conductor of heat